Which is to say, he’ll almost certainly miss the rest of the preseason; he may miss the regular season opener in Washington, on Sept. 12, as well.

Sensabaugh suffered the injury in the first quarter of Saturday night’s 16-14 win over the Chargers, while attempting to tackle running back Ryan Matthews. Linebacker Keith Brooking left with a separated shoulder, and will likely miss the rest of the preseason as a precautionary measure.

In 2009, Sensabaugh suffered a broken thumb, which forced him to wear a cumbersome cast for most of the season. He will join Marcus Spears, Dez Bryant and Kyle Kosier as Cowboys likely to miss the rest of the preseason, which wraps up on Sept. 2, against Miami in Arlington.